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Allow specifying the offset and size for reading data from files

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Also require size to be specified for SHM objects to support platforms
such as macOS that have no way to get the size from the fd.
This commit is contained in:
Kovid Goyal
2017-09-28 17:09:57 +05:30
parent 898136dbdc
commit dbd7ec5b27
5 changed files with 20 additions and 17 deletions
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9
kitty/parser.c
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@@ -552,6 +552,7 @@ parse_graphics_code(Screen *screen, PyObject UNUSED *dump_callback) {
data_height = 'v',
data_width = 's',
data_sz = 'S',
data_offset = 'O',
num_cells = 'c',
num_lines = 'r',
z_index = 'z'
@@ -575,7 +576,7 @@ parse_graphics_code(Screen *screen, PyObject UNUSED *dump_callback) {
#define KS(n, vs) case n: state = EQUAL; value_state = vs; break
#define U(x) KS(x, UINT)
KS(action, FLAG); KS(transmission_type, FLAG); KS(compressed, FLAG); KS(z_index, INT);
U(format); U(more); U(id); U(data_sz); U(width); U(height); U(x_offset); U(y_offset); U(data_height); U(data_width); U(num_cells); U(num_lines);
U(format); U(more); U(id); U(data_sz); U(data_offset); U(width); U(height); U(x_offset); U(y_offset); U(data_height); U(data_width); U(num_cells); U(num_lines);
#undef U
#undef KS
default:
@@ -628,7 +629,7 @@ parse_graphics_code(Screen *screen, PyObject UNUSED *dump_callback) {
READ_UINT;
#define U(x) case x: g.x = code; break
switch(key) {
U(format); U(more); U(id); U(data_sz); U(width); U(height); U(x_offset); U(y_offset); U(data_height); U(data_width); U(num_cells); U(num_lines);
U(format); U(more); U(id); U(data_sz); U(data_offset); U(width); U(height); U(x_offset); U(y_offset); U(data_height); U(data_width); U(num_cells); U(num_lines);
default: break;
}
state = AFTER_VALUE;
@@ -672,9 +673,9 @@ parse_graphics_code(Screen *screen, PyObject UNUSED *dump_callback) {
#define A(x) #x, g.x
#define U(x) #x, (unsigned int)(g.x)
#define I(x) #x, (int)(g.x)
REPORT_VA_COMMAND("s {sc sc sc sI sI sI sI sI sI sI sI sI sI sI sI sI si} y#", "graphics_command",
REPORT_VA_COMMAND("s {sc sc sc sI sI sI sI sI sI sI sI sI sI sI sI sI sI si} y#", "graphics_command",
A(action), A(transmission_type), A(compressed),
U(format), U(more), U(id), U(data_sz),
U(format), U(more), U(id), U(data_sz), U(data_offset),
U(width), U(height), U(x_offset), U(y_offset), U(data_height), U(data_width), U(num_cells), U(num_lines),
U(payload_sz), I(z_index),
payload, g.payload_sz